Title :
Digital partial discharge measuring system with interference recognition
Author :
Buchailla, H. ; Flohr, Th ; Pfeiffer, W.
Author_Institution :
Tech. Univ. of Darmstadt, Germany
Abstract :
This paper deals with a digital PD measuring system especially designed for reliable high-speed testing of large numbers of test specimens. The measuring process is based on a broadband measurement (f c≈100 MHz) of PD in the time domain followed by a high speed A/D converter (f=1 GHz). Then the signal is transformed to the frequency domain by FFT and the frequency characteristics of the measured pulses are compared with a “standard-PD-spectrum” that has been generated before. So the automatic distinction between interference pulses and PD-signals is possible. The measuring system is described and typical examples of measurements given. The capability of the system to distinguish between PD and interference pulses is shown
Keywords :
charge measurement; frequency-domain analysis; insulation testing; interference (signal); partial discharges; quality control; signal processing equipment; FFT; broadband measurement; digital partial discharge measuring system; frequency characteristics; frequency domain transformation; high speed A/D converter; insulation quality; interference recognition; low voltage mass production components; measured pulses; reliable high-speed testing; standard-PD-spectrum; time domain measurement; Character generation; Frequency domain analysis; Frequency measurement; Interference; Partial discharge measurement; Partial discharges; Pulse measurements; System testing; Time measurement; Velocity measurement;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1995. Annual Report., Conference on
Conference_Location :
Virginia Beach, VA
Print_ISBN :
0-7803-2931-7
DOI :
10.1109/CEIDP.1995.483741
